Warning: Permanently added '10.128.0.183' (ED25519) to the list of known hosts.
executing program
[   51.358644][ T3499] 
[   51.361407][ T3499] ============================================
[   51.367555][ T3499] WARNING: possible recursive locking detected
[   51.373703][ T3499] 5.15.148-syzkaller #0 Not tainted
[   51.379088][ T3499] --------------------------------------------
[   51.385229][ T3499] syz-executor360/3499 is trying to acquire lock:
[   51.391728][ T3499] ffff88807ec44068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12f/0x1b60
[   51.400711][ T3499] 
[   51.400711][ T3499] but task is already holding lock:
[   51.408697][ T3499] ffff88807b7ad468 (&pipe->mutex/1){+.+.}-{3:3}, at: iter_file_splice_write+0x2ab/0xfa0
[   51.418534][ T3499] 
[   51.418534][ T3499] other info that might help us debug this:
[   51.427150][ T3499]  Possible unsafe locking scenario:
[   51.427150][ T3499] 
[   51.434906][ T3499]        CPU0
[   51.438376][ T3499]        ----
[   51.441646][ T3499]   lock(&pipe->mutex/1);
[   51.445973][ T3499]   lock(&pipe->mutex/1);
[   51.450314][ T3499] 
[   51.450314][ T3499]  *** DEADLOCK ***
[   51.450314][ T3499] 
[   51.458452][ T3499]  May be due to missing lock nesting notation
[   51.458452][ T3499] 
[   51.466762][ T3499] 1 lock held by syz-executor360/3499:
[   51.472211][ T3499]  #0: ffff88807b7ad468 (&pipe->mutex/1){+.+.}-{3:3}, at: iter_file_splice_write+0x2ab/0xfa0
[   51.482409][ T3499] 
[   51.482409][ T3499] stack backtrace:
[   51.488312][ T3499] CPU: 1 PID: 3499 Comm: syz-executor360 Not tainted 5.15.148-syzkaller #0
[   51.496932][ T3499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
[   51.506979][ T3499] Call Trace:
[   51.510250][ T3499]  <TASK>
[   51.513172][ T3499]  dump_stack_lvl+0x1e3/0x2cb
[   51.517937][ T3499]  ? io_uring_drop_tctx_refs+0x19d/0x19d
[   51.523577][ T3499]  ? panic+0x84d/0x84d
[   51.527668][ T3499]  validate_chain+0x46d2/0x5930
[   51.532530][ T3499]  ? reacquire_held_locks+0x660/0x660
[   51.537903][ T3499]  ? validate_chain+0x112/0x5930
[   51.542835][ T3499]  ? look_up_lock_class+0x77/0x120
[   51.547946][ T3499]  ? register_lock_class+0x100/0x9a0
[   51.553263][ T3499]  ? is_dynamic_key+0x1f0/0x1f0
[   51.558232][ T3499]  ? mark_lock+0x98/0x340
[   51.562911][ T3499]  __lock_acquire+0x1295/0x1ff0
[   51.568111][ T3499]  lock_acquire+0x1db/0x4f0
[   51.572609][ T3499]  ? pipe_write+0x12f/0x1b60
[   51.577207][ T3499]  ? read_lock_is_recursive+0x10/0x10
[   51.582586][ T3499]  ? __might_sleep+0xc0/0xc0
[   51.587269][ T3499]  ? __lock_acquire+0x1295/0x1ff0
[   51.592293][ T3499]  __mutex_lock_common+0x1da/0x25a0
[   51.597752][ T3499]  ? pipe_write+0x12f/0x1b60
[   51.602386][ T3499]  ? pipe_write+0x12f/0x1b60
[   51.606977][ T3499]  ? mutex_lock_io_nested+0x60/0x60
[   51.612380][ T3499]  mutex_lock_nested+0x17/0x20
[   51.617225][ T3499]  pipe_write+0x12f/0x1b60
[   51.621660][ T3499]  ? __lock_acquire+0x1ff0/0x1ff0
[   51.626701][ T3499]  ? aa_file_perm+0x3af/0xf60
[   51.631468][ T3499]  ? pipe_read+0x12b0/0x12b0
[   51.636048][ T3499]  ? aa_path_link+0xea0/0xea0
[   51.640732][ T3499]  ? rcu_lock_release+0x20/0x20
[   51.645605][ T3499]  do_iter_readv_writev+0x594/0x7a0
[   51.650801][ T3499]  ? generic_file_rw_checks+0x260/0x260
[   51.656339][ T3499]  ? common_file_perm+0x17d/0x1d0
[   51.661364][ T3499]  ? fsnotify_perm+0x67/0x5a0
[   51.666056][ T3499]  ? bpf_lsm_file_permission+0x5/0x10
[   51.671707][ T3499]  do_iter_write+0x1ea/0x760
[   51.676313][ T3499]  ? vfs_iter_write+0x69/0xa0
[   51.681077][ T3499]  iter_file_splice_write+0x806/0xfa0
[   51.686453][ T3499]  ? splice_from_pipe+0x230/0x230
[   51.691504][ T3499]  ? __lock_acquire+0x1295/0x1ff0
[   51.696523][ T3499]  ? mark_lock+0x98/0x340
[   51.700878][ T3499]  ? common_file_perm+0x17d/0x1d0
[   51.706002][ T3499]  ? fsnotify_perm+0x67/0x5a0
[   51.710674][ T3499]  ? bpf_lsm_file_permission+0x5/0x10
[   51.716058][ T3499]  ? splice_from_pipe+0x230/0x230
[   51.721073][ T3499]  do_splice+0xfe6/0x1790
[   51.725441][ T3499]  ? read_lock_is_recursive+0x10/0x10
[   51.730920][ T3499]  ? __context_tracking_exit+0x4c/0x80
[   51.736371][ T3499]  ? wait_for_space+0x2d0/0x2d0
[   51.741215][ T3499]  ? __fdget+0x158/0x220
[   51.745462][ T3499]  __se_sys_splice+0x340/0x420
[   51.750220][ T3499]  ? __x64_sys_splice+0xf0/0xf0
[   51.755072][ T3499]  ? syscall_enter_from_user_mode+0x2e/0x230
[   51.761041][ T3499]  ? lockdep_hardirqs_on+0x94/0x130
[   51.766316][ T3499]  ? __x64_sys_splice+0x1d/0xf0
[   51.771175][ T3499]  do_syscall_64+0x3d/0xb0
[   51.775605][ T3499]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   51.781521][ T3499] RIP: 0033:0x7f2960d66329
[   51.785931][ T3499] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   51.805539][ T3499] RSP: 002b:00007ffc5dececd8 EFLAGS: 0